胫骨横向搬移术联合VSD技术治疗糖尿病足的疗效及其对血管生成相关因子水平的影响

目的:探究胫骨横向搬移术联合负压引流(VSD)技术治疗糖尿病足的疗效及其对血管生成相关因子水平的影响.方法:根据治疗方法不同将60例糖尿病足患者分为观察组(n=28)和对照组(n=32).对照组采用VSD技术治疗,观察组在对照组的基础上采用胫骨横向搬移术治疗.观察两组的治疗效果,对比治疗前及治疗后3个月患肢踝肱指数(ABI)、视觉模拟评分法(VAS)评分、足部血流指标(足背动脉内径、足背动脉血流速度)及血清血管生成相关因子[血管内皮生长因子(VEGF)、碱性成纤维细胞生长因子(bFGF)、表皮生长因子(EGF)]水平.结果:观察组的临床有效率为89.29％,高于对照组的59.38％(P<0.05);治疗后,观察组ABI以及VEGF、bFGF、EGF水平均高于对照组(P<0.05),且足背动脉内径及血流速度均大于对照组(P<0.05),而VAS评分低于对照组(P<0.05).结论:胫骨横向搬移术联合VSD技术治疗糖尿病足的临床疗效高于单用VSD,可能与其增加血管生成因子的表达水平、改善足部血供相关.     

大数据时代无服务器计算在科技情报服务中的应用

无服务器计算和科技情报的有机结合可形成数据、服务、应用的生态闭环，有助于为未来科技情报工作的发展提供有力支撑。研究分析了云计算在当前科技情报服务中的弊端和基于无服务器计算的科技情报服务平台的优势，总结了科技情报服务的基本流程和无服务器计算在科技情报服务系统中的应用经验，结合大数据、无服务器计算等技术和科技情报服务方法论构建了基于无服务器计算的科技情报服务系统模型和架构，为今后构建无服务器科技情报服务系统的相关研究与实践提供新思路。     

融入“思政元素”的情景教学法在住院医师规范化培训中的应用

目的探讨融入“思政元素”的情景教学法对在肝病科住院医师规范化培训（简称规培）中的应用效果。方法选取进行住院医师规范化培训的学生48人，随机分为两组，试验组采用融入“思政元素”的情景教学法，对照组采用传统教学法，对两组规范化培训学生理论考试、实践技能考核成绩及教学评价满意度进行比较。结果两组学生理论考试成绩无明显差异(P＞0.05）；两组学生临床实践技能得分比较，试验组在接诊患者、临床思维路径分析、医嘱处置、病案书写、医患沟通能力和实践技能总成绩得分均优于对照组(P<0.05)；两组学生教学效果调查问卷比较，试验组在提升学习兴趣、提升自主学习能力、团结协作能力、职业道德素养和总体教学满意度方面得分均明显高于对照组(P<0.05)。结论融入“思政元素”的情景教学法在肝病科住院医师规范化培训中应用，具有良好的效果。     

从氧化应激角度探讨补阳还五汤对糖尿病周围神经病变大鼠的治疗作用

目的 基于氧化应激探讨补阳还五汤对糖尿病周围神经病变（DPN）大鼠的神经保护作用机制和方中黄芪用量。方法 90只SD大鼠随机分为正常组、模型组、α-硫辛酸干预组、补阳还五汤高黄芪剂量组（中药高剂量组）、补阳还五汤中黄芪剂量组（中药中剂量组）、补阳还五汤低黄芪剂量组（中药低剂量组）。除正常组外，其余各组大鼠均用高糖高脂饲料联合腹腔注射链脲佐菌素（STZ）诱导糖尿病。各药物干预组分别持续给药12周。含量依次为α-硫辛酸60 mg·kg^-1·d^-1、中药高剂量组15 g·kg^-1·d^-1、中药中剂量组8.75 g·kg^-1·d^-1、中药低剂量组5.625 g·kg^-1·d^-1。给药结束后检测机械性痛阈（PWT）和神经传导速度（SNCV）；检测谷胱甘肽（GSH）和丙二醛（MDA）。取L4-5背根神经节（DRG），电镜观察各组神经元线粒体形态结构；检测呼吸链复合物Ⅰ、Ⅱ、Ⅲ、Ⅳ活性，和线粒体膜电位，免疫组化和蛋白免疫印迹法（Western blot）检测腺苷酸活化蛋白激酶（AMPK）/核因子E₂相关因子2（Nrf2）通路中主要蛋白：磷酸化单磷酸腺苷活化蛋白激酶（p-AMPK）、磷酸化核因子E₂相关因子2（p-Nrf2）、血红素氧合酶-1（HO-1）、醌NADH脱氢酶1（NQO1）的表达。结果 与正常组比较，模型组空腹血糖升高（P<0.01），SNCV、PWT、GSH含量均降低（P<0.01），MDA含量升高（P<0.01）；线粒体损伤明显，多数呈空泡样改变；呼吸链复合物Ⅰ、Ⅱ、Ⅲ、Ⅳ活性和线粒体膜电位均显著降低（P<0.01）；p-AMPK、p-Nrf2、HO-1、NQO1降低（P<0.01）。与模型组比较，α-硫辛酸组及中药高剂量组SNCV、PWT、GSH上升，MDA降低（P<0.05，P<0.01），线粒体结构损伤减轻；呼吸链复合物Ⅰ、Ⅱ、Ⅲ、Ⅳ活性和线粒体膜电位均显著升高（P<0.01），p-AMPK、p-Nrf2、HO-1、NQO1明显升高（P<0.05，P<0.01）。结论 补阳还五汤通过AMPK/Nrf2通路调节氧化应激，治疗DPN。其治疗作用与黄芪的用量有一定联系，其中补阳还五汤高黄芪剂量组抑制氧化应激的作用较补阳还五汤中黄芪剂量组和补阳还五汤低黄芪剂量组更明显。     

利用PACS实施口腔内科根管治疗质量监控的初步研究

目的 探讨标准化方法监控根管治疗质量的应用效果和存在的问题.方法 5名评价者,采用随机、单盲、对照的方法,对存储于PACS中的根管治疗病例进行评价,使用社会科学统计程序(SPSS ver16.9)分析比较其评价结果.结果 随机抽取病例156例,根据根管治疗中的3个阶段4个方面分别给予评价.对于诊断片和定位片,5名评价者的评价结论无统计学差异；对于根管充填位置和密合程度的评价,存在统计学差异.结论 PACS可以作为临床质量监控的手段；管理者在使用PACS监控根管治疗质量时,应当首先进行标准化培训.     

Malignant Hypertension with an Unusual Presentation Mimicking the Immune Mediated Pulmonary Renal Syndrome

A 27-year-old man presented at the emergency room with hemoptysis. His blood pressure was 180/100 mm Hg, and he had no history of hypertension. Chest radiographs showed bilateral infiltration, suggestive of alveolar hemorrhage. His laboratory data were consistent with acute kidney injury. His serum creatinine level increased abruptly; therefore, renal biopsy was performed. Steroid pulse therapy was administered because of a strong suspicion of immune-mediated pulmonary renal syndrome. Renal biopsy showed proliferative endarteritis, fibrinoid necrosis, and intraluminal thrombi in the vessels without crescent formation or necrotizing lesions. Steroid pulse therapy rapidly tapered and stopped. His serum creatinine level gradually decreased with strict blood pressure control. Ten months after discharge, his blood pressure was approximately 120/80 mm Hg with a serum creatinine level of 1.98 mg/dL. Pulmonary renal syndrome is generally caused by an immune-mediated mechanism. However, malignant hypertension accompanying renal insufficiency and heart dysfunction causing end-organ damage can create a pulmonary hemorrhage, similar to pulmonary renal syndrome caused by an immune-mediated mechanism. The present case shows that hypertension, a common disease, can possibly cause pulmonary renal syndrome, a rare condition.     

An Embryonic Diapause-like Adaptation with Suppressed Myc Activity Enables Tumor Treatment Persistence

1. Download : Download high-res image (202KB)
2. Download : Download full-size image

     

Nano-engineered microcapsules boost the treatment of persistent pain

Persistent pain remains a major health issue: common treatments relying on either repeated local injections or systemic drug administration are prone to concomitant side-effects. It is thought that an alternative could be a multifunctional cargo system to deliver medicine to the target site and release it over a prolonged time window. We nano-engineered microcapsules equipped with adjustable cargo release properties and encapsulated the sodium-channel blocker QX-314 using the layer-by-layer (LbL) technology. First, we employed single-cell electrophysiology to establish in vitro that microcapsule application can dampen neuronal excitability in a controlled fashion. Secondly, we used two-photon excitation imaging to monitor and adjust long-lasting release of encapsulated cargo in target tissue in situ. Finally, we explored an established peripheral inflammation model in rodents to find that a single local injection of QX-314-containing microcapsules could provide robust pain relief lasting for over a week. This was accompanied by a recovery of the locomotive deficit and the amelioration of anxiety in animals with persistent inflammation. Post hoc immunohistology confirmed biodegradation of microcapsules over a period of several weeks. The overall remedial effect lasted 10–20 times longer than that of a single focal drug injection. It depended on the QX-314 encapsulation levels, involved TRPV1-channel-dependent cell permeability of QX-314, and showed no detectable side-effects. Our data suggest that nano-engineered encapsulation provides local drug delivery suitable for prolonged pain relief, which could be highly advantageous compared to existing treatments.